 Evidence found in seven unmarked graves unearthed on Rogers Island in 2006 suggest that the site contains a military cemetery from the time of the French and Indian War.The Island was also home to a British army smallpox hospital during the war, although some of the deaths could have resulted from wounds incurred in skirmishes with the French.During the 1800s, the island was used to train militia for the American Civil War, with the northern tip being inhabited by civilians.